Lubricant guard for brakes



May 6, 1.930. R. s. SANFORD 'ET AL LUBRICANT GUARD VFOR BRAKES FiledJan. y8, 19,26

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Patented May 6, `1930 UNITEDv STAT-Es PATENT OFFICE" ROY S. SANFORD ANDvOTTO B. CLARK, OF vSOUTH BEND, INDIANA,ASSIGNORS v'.IIO BENDIX BRAKECOMPANY, OF CHICAGO, ILLINOIS, A CORPORATION '0F ILLINOIS LUBRICANTGUARD FOR :BRAKES Application filed January 8, 1926. Serial No. 79,954.

This invention relatesr to brakes, and its principal .object is toprovide eicient and 1nexpensive-means for preventing oil (or otherlubricant) from dripping` out of the end of- 5 the axlehousing onto thebrake. Preferably this is done by forming and arranging the backingplate of the brake, and the flange on the axle housing to which it isattached, to provide an. oil passage to which the` oil is directed by aflange on the wheel hub. The

drawings show the invention embodied in a semi-floating axle, in whicharrangement n the iiange on the wheel hub is preferably cup- 5 shaped,encircling the end of the axle housin Y y ther features of novelty,including various desirable details of construction vand arrangement,will be apparent from the following description of the illustrativeembodiments shown in the accompanying drawings,

in which:

Fig. 1 is a vertical section diametrically through one wheel vand itsbrake, and through a semi-floating axle; and y Fig. 2 is a similar view,but showing a modified backing plate for the brake.

10 .is driven by a semi-floating live axle 12 14, in the end of .whichthe axle is supporte by a roller bearing 16 held by a plate 18 on theaxle. The axle housing 4is enlarged atits end to receive the bearing 16,and the enlarged end is shown with a radial flange 20 to which issecured by bolts 22 'a backing plate' 24 for the brake. Backing plate24, and a drum 26 rotating with the wheel, serve as a' housing for thebrake shoes 28,. or their equivalent. i

Live axle 12 drives wheel 10 through the medium of a wheel hub 30 havinga cupshaped oil-directing flange 32 adjacent and encircling the end ofhousing 14, a sealing` passage 40. In the arrangement illustrated, thewheel projecting from the end of an axlehousing.-

end of Bange 32, Most of the oil is kept out of this pocket by, gasket34. A second sealing gasket 38 is arranged between part of backing plate24 and the outside of thel cupshaped iange 32.

At the bottom of the brake, pocket 36 oommunicates with a passage v40,shown as cast in plate 24, opening below flange 20 on the' oppositeside'of plate 24 from the wheel, and directing'the oil safely away fromshoes 28.

It will be seen that passage 40 extends from the side next the wheel (i.e. vinside the brake) to the side opposite the,A wheel, between the twosealing gaskets 34 and 38.

The arrangement of Fig. 2 differs from that just described principallyin that the backing n plate 42-is stamped from sheet metal. This plate'is formed with an oiset 44 extending axially inward of the brake, andterminating in a short flange 46 generally parallel to the .mainbody ofthe plate, thus forming an. an-

nular pocket for sealing gasket '18 engaging the outside -of flange 32.`At the bottom of'v i the brake', a radial groove50 is pressed intotheplate to form a passage corresponding to While two illustrativeembodiments have been describedin detail, it is not our intention tolimit the scope of the invention to those particular embodiments, orotherwise than bythe terms of the appended claims.

We claim:

ing and supporting means for the wheel compr1s1ng,'1n combinatlon, anaxle housing hav- 1. A'drive wheell having a brake, and drivl ing aradial :flange` a short distance' frOmj its end, a backing plate for thebrake vsecured to said ange, the plate and4 flange "being constructedand arranged to provide a 'passage between them below the axlef'rom theside 4of the plate next the wheel tothe side opposite the wheel, a liveaxle `in the housing, a

Wheel hub on the end of the live axle having a n 4cupshaped flangeencircling the end of the housing to catch oil dripping from the housingand direct it t said" passage, a sealing gasket between the interior ofthe cup-shaped flange and th endvof the housing-beyond said radialiiange, and a sealing gasket between the outer surface of the cupsliapedflange and the banking plate, the passage for the oil being between thetwo gaskets.

2. A brake backing plate of pressed metal with a central opening, to bemounted on an axle housing, and formed with an offset axially inwardofthe brake about the opening terminating in a short radial flangegenerally parallel to the main portion of the brake, and having on itsface on the. outside and at the bottom of the brake `a radialoil-draining groove communicating with the annular pocket formed by saidoffset and ange.

In testimony whereof, we have hereunto signed our names.

ROY S". SANFORD.

OTTO B. CLARK.

